/// <summary>
/// Установить обратные ссылки.
/// </summary>
/// <param name="src">Исходный тред.</param>
public void SetBackLinks(PostTreeCollection src)
{
if (src.Posts == null)
{
src.Posts = new List<PostTree>();
}
var hashService = Services.GetServiceOrThrow<ILinkHashService>();
var transformService = Services.GetServiceOrThrow<ILinkTransformService>();
var postLinks = src.Posts.DeduplicateToDictionary(p => p.Link, hashService.GetComparer());
var oldQuoteCounts = src.Posts.Select(p => new {p.Link, Count = p.Quotes?.Count ?? 0}).DeduplicateToDictionary(p => p.Link, hashService.GetComparer());
foreach (var post in src.Posts)
{
if (post.Quotes == null)
{
post.Quotes = new List<BoardLinkBase>();
}
}
foreach (var post in src.Posts)
{
if (post.Comment != null && post.Comment.Nodes != null)
{
var links = post.Comment.Nodes.SelectMany(n => n.FlatHierarchy(nn =>
{
var n1 = nn as PostNode;
if (n1 != null)
{
return n1.Children ?? new List<PostNodeBase>();
}
return Enumerable.Empty<PostNodeBase>();
})).OfType<PostNodeBoardLink>()
.Where(l => l.BoardLink != null)
.Select(l => l.BoardLink)
.ToList();
foreach (var l in links)
{
if (postLinks.ContainsKey(l))
{
postLinks[l].Quotes.Add(post.Link);
}
}
}
}
foreach (var post in src.Posts.Where(p => p.Quotes.Count > 1))
{
post.Quotes = post.Quotes.Distinct(hashService.GetComparer()).OrderBy(l => l, transformService.GetLinkComparer()).ToList();
}
foreach (var post in src.Posts)
{
var oldCount = oldQuoteCounts.ContainsKey(post.Link) ? oldQuoteCounts[post.Link].Count : 0;
if (oldCount != post.Quotes.Count)
{
post.GeneratePostStamp();
}
}
}
/// <summary>
/// Сортировать дерево по возрастанию номеров постов.
/// </summary>
/// <param name="src">Исходный тред.</param>
public void SortThreadTree(PostTreeCollection src)
{
if (src.Posts == null)
{
src.Posts = new List<PostTree>();
}
var comparer = Services.GetServiceOrThrow<ILinkTransformService>().GetLinkComparer();
src.Posts.Sort((x, y) => comparer.Compare(x.Link, y.Link));
}